Rotary machine with rings holding blades centered longitudinally and radially in the operating chamber



Jan. 26, 1965 F. scoG Mn. 3,157,023

ROTARY MACHI WITH RING OLDI BLADES CENTERED LO TUDINALLY AND RADIALLY IN THE OPERATING CHAMBER Filed Aug. 15. 1963 um un "AAT-5:15.

T- ,7 INVENTOR. ,Z5 f@ FRANK ScoGNQr/HLLU TORNEI? United States Patent O 3,167,923 RTARY MQHHQE WH RINGS HLDENG BLADES CENTERED LNGITUDINALLY AND RADIALLY HN THE PERATING CHAMBER Frank Sccgnarnilla, 113 Walnut Si., Ridgewood, N5. Filed Aug. 15, 1963, Ser. No. 32,378 1 Claim. (Cl. 15ML-136) The invention herein disclosed relates to rotary machines of the type disclosed in copending patent applications Serial Numbers 286,860, iiled June 10, 1963, and 296,019, tiled July 18, 1963, in which blades in the slots of a rotor are positioned by rings or annular shoulders in respect to the surrounding wall of an operating chamber.

Objects of the present invention are to improve such constructions, particularly to maintain the blades centered both longitudinally and radially, with a simple, practical, eliicient, low cost construction.

Other desirable objects accomplished by the invention and the novel features of construction, combination and arrangement of parts through which such objects are attained are set forth and will appear in the course of the following specification.

The drawing accompanying and forming part of this specification illustrates a present commercial embodiment of the invention. Structure however may be modified and changed as regards this illustration, all within the true intent and scope of the invention as hereinafter defined and claimed.

FIG. 1 in the drawing is a front elevation of one of the machines with front cover removed to show the sliding blades and the controlling ring at that end of the blades.

FIG. 2 is a central vertical sectional view of the machine on substantially the plane of line 2 2 of FIG. l.

FIG. 3 is a plan view of one of the blades.

FIG. 4 is a sectional view of the rotor on substantially the plane of line 4-4 of FIG. 1.

The body and housing of the machine is shown as made up of an annular cylindrical wall 7, closed at opposite ends by end walls S and 9, one at least of which is removable in the form of a cover.

The rotor 10, cylindrical in form, is carried by a shaft 11 in the cylindrical chamber, tangent to the surrounding cylindrical wall.

The circumferential wall is shown as having inlet and outlet 12, 13 at opposite sides of the line of tangency.

The rotor carries blades 14, sliding in radial slots 15 therein, these blades having ends flush with the ends of the rotor and in free operating relation with the end walls ofthe cylindrical chamber.

The blades in the present machine are centered, both longitudinally of the shaft and radially of the cylindrical chamber, by rings 16 located at the ends of the rotor, of greater diameter than the shaft but of less diameter than the rotor.

These rings have close fitting, free running engagement in parallel sided notches 17 provided in the inner edges of the blades spaced inward from the ends of the blades and they bear against the end faces 18 of the rotor so as to hold the blades both longitudinally of the shaft and radially in respect to the surrounding cylindrical wall.

The reference faces 18 against which the rings bear constitute the inner walls ofthe annular grooves or cavities 19 machined in the ends of the rotor.

Mice

These grooves in the ends of the rotor are enough wider than the rings to allow for the eccentricity of the rotor in the circumferential chamber.

The rings may be substantially square in cross section as shown so as to hold the blades firmly against any shifting movement toward or away from end walls of the casing and so as to hold the blades outwardly in desired operating relation to the cyindrical wall of the chamber.

The rings are free to rotate independently of the blades and rotor and act to balance opposing forces that may be set up in the operation of the machine.

The machine is of simple, low cost construction. The end walls of the housing may be finished smooth and ilat V and the ends of the rotor are correspondingly smooth and iiat except for the ring receiving grooves therein.

The blades are of simple, rectangular form with notches cut in the inner edges of the same of correct dimensions to closely lit the cross section of the rings.

The rings by their control of the blades, both as to longitudinal and radial movement, keep the machine in smooth, quiet, nonvibrating operation.

By holding fthe blades against both endwise and radial travel in the slots the rings overcome and prevent any tendencies toward weaving action of the blades in the housing, preventnig local wear on the blades, rotor and housing.

What is claimed is:

A rotary machine with free running rings controlling both longitudinal and radial movement of operating blades and comprising in combination,

a housing having a cylindrical body portion and end walls cooperatively forming a cylindrical chamber,

a shaft journaled eccentrically in said cylindrical chamber,

a rotor on said shaft in tangential relation with the l surrounding cylindrical wall of the chamber,

said cylindrical body portion having inlet and outlet ports at opposite sides of the tangency of the rotor,

said rotor having radial slots therein,

blades slidingly coni-ined in said slots and dimensioned for cooperative relation with the cylindrical and end Walls of said chamber,

said rotor having concentric annular cavities in the ends of the same about the shaft,

blade centering rings of substantially square cross-section seated in said annular cavities in engagement with the inner walls of said cavities,

said blades having radially extending parallel-sided notches in the inner edges of the same lined up with said inner walls of the cavities in -the ends of the rotor,

said rings closely fitting in and substantially filling said notches and thereby holding said blades outwardly in respect to the surrounding cylindrical Wall and longitudinally in both directions inrespect to the end walls of the housing, the end walls of the housing being each` in a single flat plane,

the endsy of the rotor being in single fiat planes in running engagement with the flat ends of `the housing,

the ends of the blades being llush with the ends of the rotor and in free running relation with the end walls of the housing, andV said rings by engagement with the inner walls of said annular cavities in the ends ofthe rotor and by engagement in the notches in the blades, holding the blades in longitudinal alignment in the rotor and the blades and rotor in free running relation with the end walls of the housing.

References Cited by the Examiner UNITED STATES PATENTS 3/75 Upham 103-136 2/18 Hansen et al 60-53 FOREIGN PATENTS 1,088 1869 Great Britain. 388,990 3/33 Great Britain.

LAURENCE V. EFNER, Primary Examiner.

JOSEPH H. BRANSON, JR., Examiner. 

